F16L 25/021
For screw-threaded joints
Official title: {for screw-threaded joints}
F16L25/021 (For screw-threaded joints) appears on 39 US grants and 35 published applications in this corpus.
Search patents in F16L- Granted patents
- 39
- Published applications
- 35
- Assignees
- 28
- Inventors
- 88
- Latest grant
- 7 May 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 3 |
| 2003 | 1 | 0 |
| 2004 | 1 | 2 |
| 2005 | 0 | 2 |
| 2006 | 2 | 1 |
| 2007 | 1 | 3 |
| 2008 | 2 | 4 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 0 |
| 2012 | 2 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 2 |
| 2015 | 1 | 5 |
| 2016 | 1 | 0 |
| 2017 | 3 | 0 |
| 2018 | 2 | 2 |
| 2019 | 1 | 2 |
| 2020 | 0 | 4 |
| 2021 | 2 | 1 |
| 2022 | 5 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electrically insulated threaded connection7 May 2024US 11,976,758 B1Quantum Energy Technologies
- Seal and insulator for pipe having an insulated electrical conductor13 Dec 2022US 11,525,531 B2Reelwell AS
- Junction body, fittings, hydraulic system for the passage of a fluid between two hydraulic circuits, associated mounting process30 Aug 2022US 11,428,355 B2Permaswage
- Sealed gap sub22 Mar 2022US 11,280,437 B2Evolution Engineering Inc.
- Dielectric fitting15 Mar 2022US 11,274,779 B2Legend Valve & Fitting, Inc.
- Well pipe having electrical conductor with improved electrical contacts1 Oct 2026US 2026/0298379 A1
- Electrically insulated threaded connection13 Jun 2024US 2024/0191816 A1Quantum Energy Technologies
- Seal and insulator for pipe having an insulated electrical conductor16 Dec 2021US 2021/0388925 A1Reelwell AS
- Electrical isolator8 Oct 2020US 2020/0321148 A1Crompton Technology Group Limited
- Dielectric fitting27 Aug 2020US 2020/0271256 A1Legend Valve & Fitting, Inc.
Most cited
By later US patents
- Method for making a pipe coupling140US 4,011,652 APSI Products, Inc. · 1977
- Insulated drill collar gap sub assembly for a toroidal coupled telemetry system91US 4,496,174 ATele-Drill, Inc. · 1985
- Connector assembly for hot water heaters and other appliances58US 4,991,876 AEuroflex S.r.l. · 1991
- Electrically insulative threaded connection42US 5,749,605 AProtechnics International, Inc. · 1998
- Electromagnetic gap sub assembly41US 7,252,160 B2Weatherford/Lamb, Inc. · 2007